BuddyPress.org

jivany is right — unless someone has a modicum of experience with HTML and stylesheets, a smattering of PHP, and some knowledge of how WP works in terms of theme structure and templating, it’s going to be quite difficult for them to do much but use Buddypress out of the box or with child themes that are designed to work with the current version.

It’s not impossible, but some above-novice level of knowledge and comfort with coding and website architecture has to be pretty much assumed. Take it as a challenge!